Improvement in detachable balancing-beams for weighing-scales



l. FULLER.

Dotachable Balancing Beams for Weighing-Scales.

N0.147,383 Patented Feb.10,1874.

P 21| Illu; QQ/Mmmm l illl'lllimmlim UNITED STATES PATENT OFFICE.

JOHN FOLLER, OF 'WASHINGTON, DISTRICT OF COLUMBIA.

IMPROVEMENT IN DETACHABL BALANClNG-BEAMS FOR WEIGHING-SCALES.

Specification forming part of Letters Patent No. 147,383, dated February10, 1874; application filed December 17, 1873.

To all whom it may concern:

Be it known that I, JOHN FOLLER, of Washington, in the county ofVashington and Distriet of Columbia, have invented a new and valuableImprovement in llleighing- Scales; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawingsmaking a part of this specication, and to the letters and figures ofreference marked thereon.

Figure 1 ot' the drawings is a representation of a side elevation of myscales. Fig. 2 is a plan view of the saine. Figs. 3, 4:, and 5 aredetail views.

This invention has relation to weighingscales which are especiallydesigned for groeers, who are frequently required to weigh lard, butter,and other substances in dishes and other vessels brought to the store bythe customers.

The object of my invention is to combine, with weighing-scales, adetachable arm having a movable weight applied to it, by adjusting whichweight a dish or other vessel can be quickly balanced on the scalesprevious to lweighing in it the article purchased, as will behereinafter explained.

The following is a description of my improvement In the annexeddrawings, I have represented my invention applied to one of the beams Aot' a well-known kind of weighing-scales, having dishes B B on both endsof the beams. C C represent two clamps, which are provided withtighteningscrews a a, and applied to one ot' the scale-beams A onopposite sides oi' the knife-edge bearings, so that the scale is eX-aetly balanced. Each clamp C has a holding device, l), formed on it,which presents two cars, c c, at one end, and a vertical perforation,c', at the other end. Instead of having the holders b formed onremovable clamps C C, as described, they may be constructed directly onone of the scale-beams A while casting these beams, butv for sealebeamsalready manufactured clamping devices or their equivalents will be used,and I prefer those described. D represents a rod of any suitable length,one end of which is bent so as to form two right-angular portions, d d.Then this rod is adjusted into one or the other of its holders l), itsright-angular portion cl lies between the ears c o, and its shorterportion d is received into the vertical hole c', through the holder. Therod Dis thus firmly supported in a line parallel to the scale-beams, andit can be readily removed from and applied to its holder. Gr designatesa weight, which is ap plied on the rod D, so as to slide thereon, and gis a screw, with a cranked handle, for rigidly securing the said weightat any desired point on the rod D. It this rod D be round, theadjustable weight G may be provided with a gravitating weight, g', whichwill keep the crank-screw g always upmost.

It will bc seen from the above description that when a plate or othervessel is put upon one of the dishes B it can be quickly balanced byadjusting the weight G on its rod D, after which a substance can beweighed in the usual manner. I thus avoid the great inconvenience andloss of time hitherto occasioned by hav ing to weigh the vessels beforeweighing the substances put into them.

By using two holders, b, and having the rod D removable, this rod can beadjusted into either one of these holders, as circumstances may require.

That I elaimas new, and desire to secure by Letters Patent, is-

lllhe combination of a clamp, C, a holding device, b, and a rod, D,having an adjustable balancing -weight on it, substantially asdescribed.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

JOHN FOLLER.

Witnesses:

D. D. KANE, GEORGE Ee UEHAM.

